Digital amplification assays with unconventional and/or inverse changes in photoluminescence
US11072820B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 12, 2018 |
| Grant date | Jul 27, 2021 |
| Priority date | — |
| Expiry date | Mar 19, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/6432
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Methods of, and compositions for, analysis using digital amplification assays with unconventional/inverse changes in photoluminescence to indicate the presence of one or more targets. In an exemplary method, isolated volumes may be formed, only a subset of which contain a target. Each volume may include a probe having a label, a sink having a quencher and configured to hybridize with the probe to quench the label, and a separator configured to hybridize with the probe and/or the sink to block hybridization of the sink with the probe. An amplification reaction may be performed in the volumes to generate an amplicon corresponding to the target. The separator may hybridize with the amplicon, and may be extended or degraded by the amplification reaction. Photoluminescence of the label may be detected from the volumes, and the photoluminescence of target-positive volumes may be less than that of target-negative volumes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.